Log Message:
Update to 2.5.3:
2003/06/05: Simon  (release-2-5-3)(branch: release-2-5-1-patches)
  - Fixed ENORMOUS bug in donkey that could cause corruption on other clients
     All the md4s will be recomputed for all shared files at next startup.

2003/06/02: Simon  (release-2-5-1)
  - BitTorrent: bug fix when reconnecting to tracker (remove empty event field)
  - DriverMain: remove use of "cp" command
  - Applied patches #1530, #1531, #1543, #1548 and #1563